#!/bin/bash
if [ "$2" == "--show-password" ]; then
HSADMINNG_CAS_SHOW_PASSWORD=yes
shift
else
HSADMINNG_CAS_SHOW_PASSWORD=
fi
if [ "$1" == "--trace" ]; then
function trace() {
echo "$*" >&2
}
function doCurl() {
set -x
if [ -z "$HSADMINNG_CAS_ASSUME" ]; then
curl --fail-with-body \
--header "Authorization: $HSADMINNG_CAS_TICKET" \
"$@"
else
curl --fail-with-body \
--header "Authorization: $HSADMINNG_CAS_TICKET" \
--header "assumed-roles: $HSADMINNG_CAS_ASSUME" \
"$@"
fi
set +x
}
shift
else
function trace() {
: # noop
}
function doCurl() {
curl --fail-with-body --header "Authorization: $HSADMINNG_CAS_TICKET" "$@"
}
fi
export HSADMINNG_CAS_ASSUME_HEADER
if [ -f ~/.cas-curl-assume ]; then
HSADMINNG_CAS_ASSUME="$(cat ~/.cas-curl-assume)"
else
HSADMINNG_CAS_ASSUME=
fi
if [ -z "$HSADMINNG_CAS_LOGIN" ] || [ -z "$HSADMINNG_CAS_VALIDATE" ] || \
[ -z "$HSADMINNG_CAS_SERVICE_ID" ]; then
cat >&2 <<EOF
ERROR: environment incomplete
please set the following environment variables:
export HSADMINNG_CAS_LOGIN=https://login.hostsharing.net/cas/v1/tickets
export HSADMINNG_CAS_VALIDATE=https://login.hostsharing.net/cas/proxyValidate
export HSADMINNG_CAS_USERNAME=<<optionally, your username, or leave empty after '='>>
export HSADMINNG_CAS_PASSWORD=<<optionally, your password, or leave empty after '='>>
export HSADMINNG_CAS_SERVICE_ID=https://hsadminng.hostsharing.net:443/
EOF
exit 1
fi
function casCurlDocumentation() {
cat <<EOF
curl-wrapper utilizing CAS-authentication for hsadmin-ng
usage: $0 [--trace] [--show-password] <<command>> [parameters]
commands:
EOF
# filters out help texts (containing double-# and following lines with leading single-#) from the commands itself
# (the '' makes sure that this line is not found, just the lines with actual help texts)
sed -n '/#''#/ {x; p; x; s/#''#//; p; :a; n; /^[[:space:]]*#/!b; s/^[[:space:]]*#//; p; ba}' <$0
}
function casLogin() {
# ticket granting ticket exists and not expired?
if find ~/.cas-login-tgt -type f -size +0c -mmin -60 2>/dev/null | grep -q .; then
return
fi
if [ -z "$HSADMINNG_CAS_USERNAME" ]; then
read -e -p "Username: " HSADMINNG_CAS_USERNAME
fi
if [ -z "$HSADMINNG_CAS_PASSWORD" ]; then
read -s -e -p "Password: " HSADMINNG_CAS_PASSWORD
fi
if [ "$HSADMINNG_CAS_SHOW_PASSWORD" == "--show-password" ]; then
HSADMINNG_CAS_PASSWORD_DISPLAY=$HSADMINNG_CAS_PASSWORD
else
HSADMINNG_CAS_PASSWORD_DISPLAY="<<password hidden - use --show-password to show>>"
fi
# Do NOT use doCurl here! We do neither want to print the password nor pass a CAS service ticket.
trace "+ curl --fail-with-body -s -i -X POST \
-H 'Content-Type: application/x-www-form-urlencoded' \
-d \"username=$HSADMINNG_CAS_USERNAME&password=$HSADMINNG_CAS_PASSWORD_DISPLAY\" \
$HSADMINNG_CAS_LOGIN -o ~/.cas-login-tgt.response -D -"
HSADMINNG_CAS_TGT=`curl --fail-with-body -s -i -X POST \
-H 'Content-Type: application/x-www-form-urlencoded' \
-d "username=$HSADMINNG_CAS_USERNAME&password=$HSADMINNG_CAS_PASSWORD" \
$HSADMINNG_CAS_LOGIN -o ~/.cas-login-tgt.response -D - \
| grep -i "^Location: " | sed -e 's/^Location: //' -e 's/\\r//'`
if [ -z "$HSADMINNG_CAS_TGT" ]; then
echo "ERROR: could not get ticket granting ticket" >&2
cat ~/.cas-login-tgt.response >&2
exit 1
fi
echo "$HSADMINNG_CAS_TGT" >~/.cas-login-tgt
trace "$HSADMINNG_CAS_TGT"
}
function casLogout() {
rm -f ~/.cas-login-tgt
}
function casTicket() {
HSADMINNG_CAS_TGT=$(<~/.cas-login-tgt)
if [[ -z "$HSADMINNG_CAS_TGT" ]]; then
echo "ERROR: cannot get CAS ticket granting ticket for $HSADMINNG_CAS_USERNAME" >&2
exit 1
fi
trace "CAS-TGT: $HSADMINNG_CAS_TGT"
trace "fetching CAS service ticket"
trace "curl -s -d \"service=$HSADMINNG_CAS_SERVICE_ID\" $HSADMINNG_CAS_TGT"
HSADMINNG_CAS_TICKET=$(curl -s -d "service=$HSADMINNG_CAS_SERVICE_ID" $HSADMINNG_CAS_TGT)
if [[ -z "$HSADMINNG_CAS_TICKET" ]]; then
echo "ERROR: cannot get CAS service ticket" >&2
exit 1
fi
echo $HSADMINNG_CAS_TICKET
}
function casValidate() {
HSADMINNG_CAS_TICKET=`casTicket`
trace "validating CAS-TICKET: $HSADMINNG_CAS_TICKET"
# Do NOT use doCurl here! We do not pass a CAS service ticket.
trace curl -i -s $HSADMINNG_CAS_VALIDATE?ticket=${HSADMINNG_CAS_TICKET}\&service=${HSADMINNG_CAS_SERVICE_ID}
HSADMINNG_CAS_USER=`curl -i -s $HSADMINNG_CAS_VALIDATE?ticket=${HSADMINNG_CAS_TICKET}\&service=${HSADMINNG_CAS_SERVICE_ID} | grep -oPm1 "(?<=<cas:user>)[^<]+"`
if [ -z "$HSADMINNG_CAS_USER" ]; then
echo "validation failed" >&2
exit 1
fi
echo "CAS-User: $HSADMINNG_CAS_USER"
}
case "${1,,}" in
# -- generic commands --------------------------------------------------------------------------
""|"-h"|"--help"|"help") ## prints documentation about commands and options
casCurlDocumentation
exit
;;
"env") ## prints all related HSADMINNG_CAS_... environment variables; use '--show-password' to show the password as well
# example: cas-curl env --show-password
echo "HSADMINNG_CAS_LOGIN: $HSADMINNG_CAS_LOGIN"
echo "HSADMINNG_CAS_VALIDATE: $HSADMINNG_CAS_VALIDATE"
echo "HSADMINNG_CAS_USERNAME: $HSADMINNG_CAS_USERNAME"
if [ "$2" == "--show-password" ]; then
echo "HSADMINNG_CAS_PASSWORD: $HSADMINNG_CAS_PASSWORD"
elif [ -z "$HSADMINNG_CAS_PASSWORD" ]; then
echo "HSADMINNG_CAS_PASSWORD: <<not given>>"
else
echo "HSADMINNG_CAS_PASSWORD: <<given, but hidden - add --show-password to show>>"
fi
echo "HSADMINNG_CAS_SERVICE_ID: $HSADMINNG_CAS_SERVICE_ID"
;;
# --- authentication-related commands ------------------------------------------------------------
"login") ## reads username+password and fetches ticket granting ticket (bypasses HSADMINNG_CAS_USERNAME+HSADMINNG_CAS_PASSWORD)
# example: cas-curl login
casLogout
export HSADMINNG_CAS_USERNAME=
export HSADMINNG_CAS_PASSWORD=
casLogin
;;
"assume") ## assumes the given comma-separated roles
# example using object-id-name: cas-curl assume 'hs_office.relation#ExampleMandant-with-PARTNER-ExamplePartner:AGENT'
# example using object-uuid: cas-curl assume 'hs_office.relation#1d3bc468-c5c8-11ef-9d0d-4751ecfda2b7:AGENT'
shift
if [ -z "$1" ]; then
echo "ERROR: requires comma-separated list of roles to assume" >&2
exit 1
fi
echo "$1" >~/.cas-curl-assume
;;
"unassume") ## do not assume any particular role anymore, use the plain user as RBAC subject
rm ~/.cas-curl-assume
;;
"validate") ## validates current ticket granting ticket and prints currently logged in user
casValidate
;;
"logout") ## logout, deletes ticket granting ticket
casLogout
;;
# --- HTTP-commands ----------------------------------------------------------------------
"get") ## HTTP GET, add URL as parameter
# example: cas-curl GET http://localhost:8080/api/hs/office/partners/P-10003 | jq
# hint: '| jq' is just for human-readable formatted JSON output
shift
casLogin
HSADMINNG_CAS_TICKET=`casTicket`
doCurl "$*"
;;
"post") ## HTTP POST, add curl options to specify the request body and the URL as last parameter
# example: cas-curl POST \
# -d '{ "prefix":"ttt", "reference":80001, "adminUserName":"admin@ttt.example.com" }' \
# http://localhost:8080/api/test/customers | jq
# hint: '| jq' is just for human-readable formatted JSON output
shift
casLogin
HSADMINNG_CAS_TICKET=`casTicket`
doCurl --header "Content-Type: application/json" -X POST "$@"
;;
"patch") ## HTTP PATCH, add curl options to specify the request body and the URL as last parameterparameter
# example: cas-curl PATCH \
# -d '{ "reference":80002 }' \
# http://localhost:8080/api/test/customers/ae90ac2a-4728-4ca9-802e-a0d0108b2324 | jq
# hint: '| jq' is just for human-readable formatted JSON output
shift
casLogin
HSADMINNG_CAS_TICKET=`casTicket`
doCurl --header "Content-Type: application/json" -X POST "$*"
;;
"delete") ## HTTP DELETE, add curl options to specify the request body and the URL as last parameter
# example: cas-curl DELETE http://localhost:8080/api/hs/office/persons/ae90ac2a-4728-4ca9-802e-a0d0108b2324
shift
casLogin
HSADMINNG_CAS_TICKET=`casTicket`
curl -X POST "$@"
;;
*)
cat >&2 <<EOF
unknown command: '$1'
valid commands: help, login, logout, validate, get, post, patch, delete
EOF
exit 1
;;
esac